Pipe coupling



FIG. 1 is a perspective view showing a pipe coupling in accordance with a first embodiment of my new design;

FIG. 2 is a front elevational view of the first embodiment;

FIG. 3 is a rear elevational view of the first embodiment;

FIG. 4 is a right side elevational view of the first embodiment;

FIG. 5 is a left side elevational view of the first embodiment;

FIG. 6 is a top plan view of the first embodiment;

FIG. 7 is a bottom plan view of the first embodiment;

FIG. 8 is a perspective view showing a pipe coupling in accordance with a second embodiment of my new design;

FIG. 9 is a front elevational view of the second embodiment;

FIG. 10 is a rear elevational view of the second embodiment;

FIG. 11 is a right side elevational view of the second embodiment;

FIG. 12 is a left side elevational view of the second embodiment;

FIG. 13 is a top plan view of the second embodiment;

FIG. 14 is a bottom plan view of the second embodiment;

FIG. 15 is a perspective view showing a pipe coupling in accordance with a third embodiment of my new design;

FIG. 16 is a front elevational view of the third embodiment;

FIG. 17 is a rear elevational view of the third embodiment;

FIG. 18 is a right side elevational view of the third embodiment;

FIG. 19 is a left side elevational view of the third embodiment;

FIG. 20 is a top plan view of the third embodiment; and,

FIG. 21 is a bottom plan view of the third embodiment.

The broken lines shown in the drawings are for the purpose of illustrating portions of the pipe coupling that form no part of the claim. 

CLAIM The ornamental design for a pipe coupling, as shown and described. 